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Special Parameter Online Monitoring Instrument
Volatile Fatty Acid (VFA) Online Analyzer
product details

Product model: VFA-8000


System Description


The VFA-8000 Volatile Fatty Acid (VFA) online monitor is an automatic online VFA monitor controlled by an embedded system. It can be used for online real-time monitoring of water treatment processes in the food industry and other industries containing volatile fatty acids, or for real-time online monitoring of post-treatment discharge standards.After sample filtration, it is pumped into the reactor, where masking agents are first injected to eliminate interfering substances, and then the pH value of the solution is adjusted to ensure a suitable pH level. Next, a characteristic developer is added to undergo a color reaction with the fatty acid, and the absorbance of the reaction product is measured.The concentration of VFA in the sample is calculated based on the absorbance value and the calibration factor stored by the monitor.




Measuring principle: photoelectric colorimetry;
Range: 0-200\1000\5000mg/L;
Measurement type: cycle measurement;
Measurement interval: can be set arbitrarily;
Measurement time: approximately 30 minutes;
Measurement accuracy: 10%;
The lowest detection limit: 1mg/l;
Reproducibility: 5%;
Signal output: 4-20mA analog output or RS232 optional;
Sample delivery: no pressure;sample temperature: 0-30℃;
Reagent replacement: 3-4 weeks, depending on the operating temperature;
Ambient temperature: 5-40℃;
Protection level: IP55;
Power supply: power supply: 220VAC;
Weight: 45kg (excluding the medicine);
Dimensions: 530x1340x390mm;




· The water sample pre-treatment device adopts a maintenance-free design, ensuring a maintenance cycle of over half a year for the pre-treatment device.

· The characteristic is that the measurement of water samples is not affected by the interference of CO2, sulfides, and sulfites, making it suitable for online real-time monitoring of various water qualities.

· The fully imported components and innovative analysis flow path design and reagent formulation ensure extremely high measurement reproducibility, currently reaching 5%.

· Fully automatic operation, no need for personnel on duty, intelligent functions such as automatic zero adjustment, automatic calibration, automatic measurement, automatic cleaning, automatic maintenance, self-protection, and automatic recovery can be achieved.

· The online monitoring method is diversified, and can achieve manual measurement at any time, automatic timing measurement, automatic periodic measurement, and other measurement methods.

· Automatic leakage warning function: when there is a reagent leak, the instrument automatically warns the user to perform maintenance.

· It is easy to operate and maintain, without professional training

· The electrical and fluid parts are isolated, using an embedded control system for fully automated operation.